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User cannot link between two switches due to an incorrect Ethernet cable

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Resolution

When connecting a switch to another switch, a crossover cable must be used. This applies for connecting all like devices, including these:

  • switch to switch
  • workstation to workstation
  • workstation to router
  • switch to hub
  • hub to hub
  • router to router

If the device has a port designated with an X and it is connected to a similar device's port without an X designation, then a straight through cable should be used. However, if ports on both sides are designated with an X, a crossover cable should be used to connect them.

For more information, including a chart of correct cables, refer to Catalyst Switch Cable, Connector, and AC Power Cord Guide.